WWUS76 KPDT 151938
 NPWPDT
 
 URGENT - WEATHER MESSAGE
 NATIONAL WEATHER SERVICE PENDLETON OR
 1138 AM PST THU JAN 15 2009
 
 ORZ044-501-WAZ027>029-160700-
 /O.CAN.KPDT.FG.Y.0001.000000T0000Z-090115T2000Z/
 /O.NEW.KPDT.ZF.Y.0001.090115T1938Z-090116T2300Z/
 /O.CON.KPDT.AS.Y.0001.000000T0000Z-090121T0000Z/
 LOWER COLUMBIA BASIN OF OREGON-
 FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON-YAKIMA VALLEY-
 LOWER COLUMBIA BASIN OF WASHINGTON-
 FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
 INCLUDING THE CITIES OF...ARLINGTON...BOARDMAN...HERMISTON...
 HEPPNER...PENDLETON...SUNNYSIDE...YAKIMA...CONNELL...PROSSER...
 TRI-CITIES...DAYTON...WAITSBURG...WALLA WALLA
 1138 AM PST THU JAN 15 2009
 
 ...FREEZING FOG ADVISORY IN EFFECT UNTIL 3 PM PST FRIDAY...
 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
 TUESDAY...
 ...DENSE FOG ADVISORY IS CANCELLED...
 
 THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A FREEZING
 FOG ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM PST FRIDAY. THE
 DENSE FOG ADVISORY HAS BEEN CANCELLED. AN AIR STAGNATION ADVISORY
 REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. 
 
 A RIDGE OF HIGH PRESSURE WILL CONTINUE ACROSS EASTERN WASHINGTON
 AND EASTERN OREGON THIS WEEK AND INTO EARLY NEXT WEEK. LIGHT WINDS
 AND STRONG TEMPERATURE INVERSIONS WILL RESULT IN LITTLE MIXING OF
 THE AIR...WITH THE POTENTIAL FOR POLLUTANTS TO BE TRAPPED NEAR
 GROUND LEVEL.
 
 AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
 OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE.
 CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE
 RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION...
 CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.
 
 TEMPERATURES WILL REMAIN AT OR BELOW FREEZING TODAY THROUGH
 FRIDAY MORNING ACROSS THE LOWER COLUMBIA BASIN...FOOTHILLS OF
 THE BLUE MOUNTAINS AND IN THE YAKIMA VALLEY. THEREFORE...AREAS OF
 FREEZING FOG...WITH OCCASIONAL SNOW FLURRIES AND LIGHT FREEZING
 DRIZZLE...WILL CONTINUE INTO TOMORROW. DRIVERS ARE URGED TO SLOW
 DOWN AND ALLOW FOR EXTRA TIME WHILE TRAVELING AS ROADWAYS MAY BE
 SLIPPERY...AND VISIBILITIES MAY DROP TO ONE HALF MILE OR LESS IN
 PLACES.
 
 A FREEZING FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
 REDUCED TO ONE QUARTER MILE OR LESS WITH TEMPERATURES AT OR BELOW
 FREEZING. IF DRIVING...SLOW DOWN...USE YOUR HEADLIGHTS...AND LEAVE
 PLENTY OF DISTANCE AHEAD OF YOU. ALSO...BE ALERT FOR ICE FORMING
 ON ROADWAYS...BRIDGES AND OVERPASSES. FOR ADDITIONAL WEATHER
 INFORMATION...CHECK OUR WEB SITE AT WWW.WEATHER.GOV/PENDLETON.
 
 $$
 
 ORZ041>043-504-WAZ024-026-160700-
 /O.CON.KPDT.AS.Y.0001.000000T0000Z-090121T0000Z/
 EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
 CENTRAL OREGON-NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES-
 EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
 INCLUDING THE CITIES OF...THE DALLES...DUFUR...MADRAS...MAUPIN...
 MORO...BEND...LA PINE...PRINEVILLE...REDMOND...CONDON...FOSSIL...
 SPRAY...WHITE SALMON...ELLENSBURG
 1138 AM PST THU JAN 15 2009
 
 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
 TUESDAY...
 
 AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
 TUESDAY. 
 
 A RIDGE OF HIGH PRESSURE WILL CONTINUE ACROSS EASTERN WASHINGTON
 AND EASTERN OREGON THIS WEEK AND INTO EARLY NEXT WEEK. LIGHT
 WINDS AND STRONG TEMPERATURE INVERSIONS WILL RESULT IN LITTLE
 MIXING OF THE AIR...WITH THE POTENTIAL FOR POLLUTANTS TO BE
 TRAPPED NEAR GROUND LEVEL.
 
 AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
 OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE.
 CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE
 RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION...
 CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON.
 
 $$